My payment was refused on the site (error message)

When you give your banker's card number (16 digits without spaces with the expiry date and 3 digits from the back of the banker's card), the SNCF payment site queries the banker's card authorisation centre, which allows or refuses the debit.

The maximum number of transactions authorised per day is 3 for a daily total of 860 Euros. If you make a mistake when entering your banker's card, it is blocked for 24 hours as a security measure.

If your on-line banking transaction is refused, you cannot make your reservation again until a minimum of 24 hours have elapsed.